Expert Systems Limited
Analyst Programmer
- Delivered a GenAI RAG platform with NestJS APIs and a React admin portal for knowledge bases, AI model settings, and LMS integration.
- Authored and maintained user manuals and program manuals for operators, support teams, and technical stakeholders.
- Led end-to-end SDLC delivery through UAT and production release, with Nginx/HTTPS edge hardening, SonarQube/SonarCloud static code analysis (SAST), and OWASP ZAP dynamic security testing (DAST).
- Provided post-go-live support and system stabilization to ensure reliable operations and reduced manual coordination.
Key Projects
- GenAI Knowledge Base Hub (https://terryshek-profile.pages.dev/)— A centralized platform allowing teams to upload corporate specifications documents and query deep answers with reliable context reference checking. Lead Architect React, Node.js, Vector DB, RAG Engine
